Ralph o



Rj. o. WILLIAMS. nu'sr, IIIIo vIIIvE CAP. APPLICATION -FILEIJ DEC. 6. 19m.

l 367, Patented June 24, 1919.

5mm/Moz JZ. 0. Wlwna wi/imm duerme l TED sTATf Enr OFFICE.

vneutri-1 o. WILLIAMS., orfvrcxsntrne, MICHIGAN.

nus'ry Ann vALvn can? recaer-v.

To all whom it may concern:

Be it known that l, RALPH 0. WIIMAi/rs, a

citizen ofthe United` States, residing atl Vicksburg, in the county of Kalamazoo and State of Michigan, have invented new and useful Improvements 1n Dust and Valve Caps, of which the following is a specication. Y l

. 'llhis invention relates to new and useful improvementsin dust caps for automobile tire valves and the principal object of the' invention is to 'provide a cap made of resilient material and one which can be placed in position `with the leastpossible eort.

Another object of the invention-is to pro` vide a device of this character which `is simple and durable in constructiomrreliable parts, to be -hereina ter, fully described,

illustrated in theV accompanying 'drawings and specifically pointed outin the appended claim.

y ln describing my invention in detail, reference 'will be had to Athe accompanying drawings wherein like' characters denote likeor corresponding partsthroughout the s evi eral views, and in which'te- Figure 1 is a viewfpartlyiin section'showl ing my inventionin use'. l

Fig. 2 is an enlarged sectional view of the device. f

ln these vlews, 1 indicates a portion ofa v wheel rim, 2 the tire and 3 the valve stem projecting through the usual hole in the rim.Y

ln place of the usual screw threaded metal cap for covering the stem ll'use a cap a, pref- A Specification of Letters Patent.

partition.

`Iatented June 24, 1919.

application med December c, iena.. 'glm 5M-,

u erably made of rubber, which ts over the stem. The cap is held in position Vby means of a metal base 5, which is provided with a flange 6l adapted to 'be secured tothe rim by screws or the like. with a tubular part 7 of slightly tapering formand having a groove 8 adjacent the flange. The open end of the rubber cap ts This' base is provided Y over the tubular part with its beaded edge fitting in the groove 8.'. rllhe closed end of the cap has a partition 9 therein, also formed of rubber, 'and providing an air chamber 10 in the end of the cap. This partition has an opening 11 therein which receives the small end of the valve stem.

lt will thus be seen that the cover may be pushed on and removed from the metal base very quickly and with the least possible elfort. rlFhe opening 11v is made smaller than the end of the valve stem, so that said stem will fit snugly into said opening, so as to make the air chamber 10 airtight.

With my invention it is not necessary to provide the stem with screw threads.

' llt is thought from the foregoing' description that the advantages and novel features of my invention will be readily apparent.

ll desire it to be understood that ll may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What l .claim isz- 4 A device of theclass described comprising a rubber cap havin j a erforated partition adjacent its closedyen chamber and means for securing the ca tothe rim with the end of the stem in sai ln testimony whereof l hereby air my signature.

. RALPH 0. WlLLlAll/lS.

forming an air dll. 

